Hudson reset on upgrade

I realized today that Hudson was about 15 versions out of date.  I did the upgrade (pfexec pkg install hudson).  On restart, Hudson now had a blank configuration.  Don't worry - your data isn't gone. My manifest file had been modified and reimported; so now the various paths were incorrect for my system.  Fixing and reimporting (pfexec svccfg import hudson.xml) was enough to get it working again.